Moving ahead with their ambitious plan to bring WiMax to 120 million Americans by the end of the year, Sprint added seven new cities to their list: Cincinnati, Cleveland, Los Angeles, Miami, Pittsburgh, Salt Lake City and St. Louis.

Sprint's expanding its 4G mobile broadband service—also known as WiMax—quite a bit this year.…
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These join Boston, Denver, Kansas City, Houston, Minneapolis, New York, San Francisco and Washington, D.C, which Sprint announced last month, as cities that will bask in the warm glow of WiMax by the end of the year. 4G, from sea to shining sea.

There are rumblings that today will see the announcement of the HTC Supersonic, an Android-powered phone with WiMax connectivity. An exciting day indeed for those eagerly awaiting 4G. [BusinessWire]